Calling this function with a non-zero 'state' value between csoundPreCompile() and csoundCompile() will disable all default handling of sound I/O by the Csound library, allowing the host application to use the spin/spout/input/output buffers directly. If 'bufSize' is greater than zero, the buffer size (-b) will be set to the integer multiple of ksmps that is nearest to the value specified.